<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .flex{
            width: 800px;
            height: 200px;
            background: lemonchiffon;
            display: flex;
            flex-direction: row;
            justify-content: start;
            align-content: center;
            flex-wrap: wrap;
        }
        .item_1{
            width: 80px;
            height: 30px;
            background: lightblue;
        }
        .item_2{
            width: 180px;
            height: 30px;
            background: rgb(125, 216, 244);
        }
        .item_3{
            width: 380px;
            height: 30px;
            background: rgb(212, 238, 245);
        }
        .item_4{
            width:380px;
            height: 30px;
            background: rgb(108, 223, 255);
        }
        .num{
            width: 1000px;
            display: flex;
            height: 50px;
            margin: 0 auto;
            background: darkcyan;
        }

        .num1{
            width: 30px;
            background: chartreuse;
        }
        .num2{
            flex: 1;
            display: grid;
            background: cornflowerblue;
        }
        .box{
            width: 30px;
            height: 30px;
            position: relative;
            background: rgba(173, 173, 173, 0.5);
            border-top-right-radius: 50%;
            border-bottom-right-radius:  50%;
        }
        .box::after{
            content: '';
            width: 5px;
            height: 5px;
            border-style: solid;
            border-width: 2px 0px 0px 2px;
            border-color: rgb(145, 145, 145);
            transform: rotate(125deg);
            position: absolute;
            right: 10px;
            top: 10px;
        }
    </style>
</head>
<body>
    <div class="flex">
        <div class="item_1"></div>
        <div class="item_2"></div>
        <div class="item_3"></div>
        <div class="item_4"></div>
    </div>
    <div class="num">
        <div class="num1">111</div>
        <div class="num2">222</div>
    </div>
    <div class="box"></div>
    <a></a>
</body>
</html>